Modern people eat raw meat all the time

• Fish (sashimi) proof
• Chicken (I swear, they do it in Japan) proof
• Beef (tartare is very popular in france) proof
• Shrimp (SEA loves their spiced shrimp) proof
• Eggs (Bodybuilders do this sometimes, especially after the Rocky Films) proof

You can eat raw meat, and it is delicious. The problems come from the industrialization of farming - meat is often butchered in a setting where they assume the meat will be cooked, co-mingled with many other animals, and frozen delivered, unfrozen for display, etc. If you have a animal you know is healthy, and you butcher it yourself... you can eat the meat raw with little risk.

This is why ground beef must be cooked well done all the way through (the exposed surface area to the industrial process is all of the meat), while a good steak is OFTEN eaten Rare/Blue (or medium rare) (the inside of the steak can be rare because only the outside is exposed to the industrial process).

Human Stomach PH is on the same level as vultures, we CAN eat raw uncooked meat, and deal with lots of pathogens/bacteria... just not all of the pathogens and bacteria.

Once we stopped being regularly exposed to pathogens associated with raw unrefrigerated meat, we lost our immunity.

Think of it like traveling to a country with low water quality standards. If you drink the water, you get cramps and diarrhea. The locals have immunity and their babies have immunity because antibodies to the pathogens are passed in mother's milk. That gives the babies enough immunity to avoid illness when they start drinking the water. Frequent subsequent exposure to the pathogens maintains their immunity.

But if a person with immunity moves to an area with higher quality water and then moves back after many years, they can experience intestinal distress from the water because they lost their immunity.

why haven't we simply evolved to be immortal smdh

We did, imperfectly. Stomach acid is one example -- it kills enough pathogens that people who take medications to reduce their stomach acid are actually at higher risk of foodborn illness.

https://today.ucsd.edu/story/common_acid_reflux_medications_promote_chronic_liver_disease

Not a scientist, completely speaking out of my ass; but maybe we did evolve to fight those bacteria a long time ago, and ever since we cook food, the bacteria has evolved past our evolvedness or something, idk good question